Final Exam

Navigation » List of Schools » Prince George Community College » Chemistry » Chem 1010 – General Chemistry 1 » Summer 2021 » Final Exam

Need help with your exam preparation?

Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Try The Exam

Question #1

Which substance is the reducing agent in this redox equation?
HF + Cl2 → F2 + HCl

A F

B HCl

C Cl2

D none of these

E HF

Question #2

The carbon-carbon x bond in ethylene, CH2CH2, results from the overlap of which of the following?

A sp3 hybrid orbitals

B p atomic orbitals

C s atomic orbitals

D sp2 hybrid orbitals

E sp hybrid orbitals

Question #3

Which one of the following does not have the electron configuration [Ne] 3s23p6?

A Br-

B Ar

C Ca2+

D K+

E Cl-

Question #4

Which molecule is polar?

A BF3

B H2Se

C GeF4

D CO2

E N2

Question #5

Determine the hybridization each of the highlighted (bold) atoms, CO32-, OF2, NO2+

A sp2 sp2 sp

B sp3 sp2 sp2

C sp3 sp3 sp2

D sp2 sp3 sp2

E sp2 sp3 sp

Question #6

If a 2.0-liter sample of gas experiences a decrease in pressure form 1.74 atm to 0.555 atm at 25oC, what is the resulting volume (inL) at 25oC?

A 0.64 L

B 0.48 L

C 6.3 L

D 1.9 L

E 20 L

Question #7

Classify each substance as an atomic element, molecular element, molecular compound, or ionic compound: Na2O

A Molecular compound

B Ionic compound

Question #8

Classify each substance as an atomic element, molecular element, molecular compound, or ionic compound: NO

A Molecular compound

B Molecular element

Question #9

Classify each substance as an atomic element, molecular element, molecular compound, or ionic compound: CrCl3

A Ionic compound

B Molecular compound

Question #10

Classify each substance as an atomic element, molecular element, molecular compound, or ionic compound: Au

A Atomic element

B Ionic compound

Question #11

Classify each substance as an atomic element, molecular element, molecular compound, or ionic compound: chlorine

A Molecular element

B Atomic element

Question #12

Use VSEPR Theory to predict th X-A-X angles for the following compounds CO2, GeF4, BCl3

A 109.5o,109.5o,109.5o,

B 109.5o, 90o, 90o

C CO2, GeF4, BCI3

D 180o, 90o, 120o

E 180o, 109.5o, 120o

Question #13

Which of the following is a mathematical representation of Avogadro’s Law

A P/V = constant

B 1/T = constant

C n/V = constant

D V= constant x n

E n = constant

Question #14

Using VSEPR Theory, predict the molecular geometry of XeF4.

A see-saw

B square planar

C tetrahedral

D square pyramidal

E triangular bipyramidal

Question #15

Which of the following has the largest ionic radius?

A F-

B Na+

C P3-

D K+

E Cl-

Question #16

Classify each type of matter as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous: sugar

A Compound

B Pure Substance

Question #17

A Homogeneous mixture

B Heterogeneous mixture

Question #18

A Heterogeneous mixture

B Homogeneous mixture

Question #19

A Element

B Mixture

Question #20

Which of the following is not a conjugate acid-base pair?

A HPO42- and PO43-

B HCOOH and HCOO-

C CH3COOH and CH3COO-

D H2SO3 and HSO4 –

E CH3NH3 + and CH3NH2

Question #21

Calculate the hydronium (H3O+) ion concentration an aqueous solution with a pH of 9.85 at 25 C.

A 7.1 x 10-5 M

B 1.4 x 10-10 M

C 4.2 x 10-10 M

D 6.5 x 10-5 M

E 8.7 x 10-10 M

Question #22

Inidcate whether each of the following is a physical change (P) or a chemical change (C) : the evaporation of fingernail-polish remover (acetone) from the skin

A P

B C

Question #23

Inidcate whether each of the following is a physical change (P) or a chemical change (C) : the tendency of gasoline to evaporate quickly when spilled

B P

C C

Question #24

Inidcate whether each of the following is a physical change (P) or a chemical change (C) : the tendency of automobile paint to dull over time

A C

B P

Question #25

Inidcate whether each of the following is a physical change (P) or a chemical change (C) : the tendency of copper to turn green when exposed to air

A C

B P

Question #26

Gas is sold for $1.399 per liter in Toronto, Canada. Your car needs 12.00 gallons. How much will your credit be charged in Canadian dollars?

A $4.44

B $16.79

C $67.15

D $63.54

Question #27

In which of the following sets do all species have the same number of protons?

A Ge, Se2-, Br –

B K+, Rb+,Cs+

C Br, Br-, Br+

D F-, Ne, Mg2+

Question #28

What is the conjugate base of H2PO4?

A OH

B HPO42-

C H3O+

D H3PO4

E PO43-

Question #29

Which molecule is nonpolar?

A SO2

B CH2CI2

C SO3

D SF4

E H2S

Question #30

An aqueous solution is 13.0% by mass potassium bromide, KBr, and has a density of 1.10 g/mL. The molality (m) of potassium bromide in the solution is:

A .99 m

B 2.52 m

C 13.92 m

D 1.26 m

Question #31

What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41) / 63.498

A 4.5728

B 4.57

C 4.573

D 4.6

E 4.5277

Question #32

How many different values of ml are possible in the 5d sublevel?

A 3

B 2

C 1

D 5

E 7

Question #33

Determine the iodine ion concentration (in molarity) in a solution containing 12.6 g Cal2 dissolved in 2750 mL of solution.

A 0.0993 M

B 9.16 M

C 0.0156 M

D 4.58 M

E 0.0312 M

Question #34

What is the enthalpy change for the combustion of 1.44 g C4H10 in excess oxygen?
C4H10 (g) + 13 O2 (g) …….. 8CO2(g) + 10 H2O(g) Ho = -3788 kj

A -2.63 x 103 kj

B -1.32 x 103 kj

C -22.6 kj

D -46.9 kj

E -93.9 kj

Question #35

You want to prepare 208 grams of 14.8% Cr(NO3)2. How many grams of Chronium (II) Nitrate and how many mL of water is needed. Imagine that density of water is 1 g/ml.

A 14.8 g Cr(NO3)2 and 85.2 g H2O

B 14.8 g Cr(NO3)2 and 208 g H2O

C 14.8 g Cr(NO3)2 and 85.2 g H2O

D 30.8 g Cr(NO3)2 and 177 g H2O

Question #36

Which group includes only exothermic processes?

A freezing, condensation, deposition

B melting, condensation, deposition

C freezing, vaporizartion, deposition

D melting, condensation, sublimation

E melting, evaporation, sublimation

Question #37

Calculate the pH of 0.051 M solution of sodium acetate (CH3COONa) The Ka lactic acid id 1.4 x 10 – 4

A 8.28

B 11.43

C 1.29

D 2.57

E 12.71

Question #38

Which of the following is a mathematical representation of Charles’ law?

A n x T = constant

B PV = constant

C V x T = constant

D P/T = constant

E V/T = constant

Question #39

In the reaction given below, how many grams of C14H9Cl5 will be produced by the reaction of 25.0g of each of the starting materials?
C2HOCl3 + 2 C6H5Cl→ C14H9Cl5 + H2O

A 121 g

B 354 g

C 157 g

D 78.7 g

E 39.4 g

Question #40

Arrange the elements given in order from largest to smallest atomic radii.

A K>Na>P>Ar>Ne

B Ne>Ar>P>Na>K

C Ar>K>Na>Ne>P

D K>Ar>P>Na>Ne

E Ar>P>Na>Ne>K

F K, Ne, Ar, Na, P

Question #41

Calculate the atomic mass of element “X”, if it has 2 naturally occurring isotopes with the following masses and natural abundances:
X-45 – 44.8776 amu – 32.88%
X-47 – 46.9443 amu – 67.12%

A 46.84 amu

B 46.26 amu

C 44.99 amu

D 45.91 amu

E 46.34 amu

Try The Exam

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

Need help with your exam preparation?

Below are the questions for the exam with the choices of answers:

Christian S.

Tyra

Linda

Manush

We accept payment